Hood for flash-igniters.



E. 0. KAHN.

HOOD FOR'FLASH IG NITERS.

APPLICATION FILED MAR. 3, 1915.

1,175,5Q7. Patented Mar. 14,1910;

a ra n rich.

EDWARD c'. KAHN, or MILWAUKEE, Wisconsin.

HOOD FOR FLASH-IGNITERS.

and State of \Visconsin, have invented certain new and useful Improvements in Hoods for F lash-Igniters; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to the general type of hooded flash torch utilized for igniting grouped gas stove burners and has for its object to, provide a simple, economip a'l and effective hood for such flash torches.

Heretofore, so far as I am aware, the general practice has been to ,utilize ither an open top hood for incasing the gas supply head or a closed dome hood. Practice has demonstrated that where an open top hood has been employed, cross-currents of air frequently snuff out the constantly burning pilot-light and hence the. closed dome ty e of hood is the preferable construction. 0

jections have been found, however,to a dome wholly closed in the'top portion for the reason that the constantly ascending current, composed: of the products of. combustion, is deflected downwardly by the hood into the path of the incoming fresh air, which feeds the flame, and therefore vitiates it ina manner to interfere seriously with proper combustion and at times to snuff out the pilot light altogether by exclusion of oxygen from This condition also causes the burningpilot-light to emit obnoxious odors and the partly smothered flame also causes sooty deposits, both upon the burner head sliding engagement with the tongues of the and walls of the hood.

My invention is designed to overcome the above referred to objections ina closed hood and it consists essentially in the arrangement of a series of vents disposed above the usual firing ports of such hoods.

Another feature of my invention is to provide a bottom spider for the hood, whereby the same maybe conveniently removed for cleansing and the separable construction also renders the device simple in manufacture and convenient in assemblage.

With the above objects in view the invention consists in certain peculiarities of construction and arrangement. of parts as set forth hereinafter with reference to the accompanying drawings and subsequently claimed.

' In the drawings Figure 1 represents a Specification of Letters Patent.

. stantly burning pilot-light.

Ratented ar. 14, 191.6.

Application filed March 3, 1915. Serial No. 11,919.

sectional elevation of a gas-supply head incased within a hood embodying the features of my invention, and Figs. 2 and 3, peripective views of the dismantled hood mem Referring by characters to the drawings, 1

represents a gas-supply head provided with a serles of radially disposed apertures 1 for the discharge of a corresponding series of jet flames to associated gas stove burners,

not shown. The head is supplied with gas under valve control, whereby restricted quantities of the gas aracaused to flow from the apertures to form a constant burning pilot-lightand when the flow of gas is increased the auxiliary volume will cause a series of jet flames to be emitted from the head; as indicated in Fig. 1 of the drawings. All of the above described mechanism, however, forms no part of my present invention. The hood elements, which are designed to incase any type of head,comprise a spider 2 in the form of a circular disk having a I central aperture therein provided with a vdownturned flange 2 for engagement with inverted cup-like hood 6, the side walls 6' f which are provided with a series of depressions 6" extending for a predetermlned distance from its mouth adapted to have The side walls of the hood are also spider.

ports 7,

provided with a series of firing ,which are so positioned with relation to the tongue-receiving depressions as to register with the firing apertures of the head.

The side walls ofthe hood are also provided with a series of vent apertures 8 POSI- tioned just below the dome wall 6' of the hood, as shown, which vent apertures are so proportioned with relation to the air inlet apertures 5 of the spider as to produce perfect combustion with relatlon to the con- I From the foregoing description it is apparent that, owing to the hood vents above the firing apertures, there is no liability for the accumulation of a strata of vitlated a r or products of combustion above the burner I head to flatten or snufi' out the pilot-light.

7 5 carried oii'through the'vent openings 8...

Furthermore, it will be seen, owing to the fact that the air intake apertures 5 and vent apertures 8 are uniformly disposed about the pilot-light, the currents of air entering and discharging from the closed hood will flow uniformly about the head, whereby cross-currents are eliminated, which crosscurrents would otherwise snuff out or cause the pilot-light to'waver and, as'previously 15 mentioned, this construction also eliminates the tendency of the low-burning pilot-light to foul the ports in any way, resulting in obnoxious odors I I claim l 1 A substantially closed dome hood for -flash igniterscomprising an inverted one piece cup-like member having a series of firing ports therein, and a series of vent apertures above the firing ports.

2. A substantially closed dome hood for flash igniters comprising an inverted onepiece cup-like member having a series of firing ports therein, a series of vent -aper tures formed in the wall of the dome, above the firing ports, and a spider for supporting the inverted mouth of the cup-like hood'.-.

an,inverted one-piece cup-like member,.the side walls of which are provided with firing ports adjacent to its inverted mouth and ventports adjacent to its top wall.

4. In a flash torch comprising a burner head having a series of firing apertures therein; the combination of I a, one-piece closed dome hood for incasing the head, the hood being provided with firing ports in register, with said head, and vent apertures above the firing portsa A 5. In a flash torch comprising a burner head having, a series of firing apertures therein; the combination of a one-piece closed top dome hood for incasing the head,

' 6. A one-piece-closed top dome hoodforflash igniters comprising an inverted cuplike member provided with a series of firing ports and Vent ports above the firing ports, and a spider for detachable connection with the. inverted mouth oi the cup-' like hood. a

7. In a flash torch comprising a burner head having a series of' firing apertures therein; the combination of a one-piece hood incasing the head and closed at the a top, said hood having a series of 'vent apertures in its side walls adjacent to they top and also having firing ports located below said apertures. in registry with the apertures in the head.

' 8.In a flesh torch. comprising a burner head having a series of firing. apertures therein; the combination of a one-piece hood incasing the head and closed at the top, said hood having a series of vent apertures in its side walls adjacent to the top and also 3.- A hood for flash 'igniters comprising shaving firing ports'located below. said aper-.

tures in registry with the apertures in the head, and means for supplying air to the hood from the bottom.

In testimony that I claim the foregolng I have hereunto set my hand at Milwaukee in the county of Milwaukee and State of Wisconsin in the presence of two witnesses.

- EDWARD'G. KAHN. Witnesses: j A

7 GEO- W. YOUNG, M. E. DOWNEY.. 

